63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup gpu
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*/
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#pragma once
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#include "vk_common.hh"
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namespace blender::gpu {
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/**
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* `VK_ALLOCATION_CALLBACKS` initializes allocation callbacks for host allocations.
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* The macro creates a local static variable with the name `vk_allocation_callbacks`
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* that can be passed to VULKAN API functions that expect
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* `const VkAllocationCallbacks *pAllocator`.
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*
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* When Blender is compiled with `WITH_VULKAN_GUARDEDALLOC` this will use
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* `MEM_guardedalloc` for host allocations that the driver does on behalf
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* of blender. More internal allocations are still being allocated via the
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* implementation inside the VULKAN device driver.
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*
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* When `WITH_VULKAN_GUARDEDALLOC=Off` the memory allocation implemented
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* in the vulkan device driver is used for both internal and application
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* focused memory operations.
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*/
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#ifdef WITH_VULKAN_GUARDEDALLOC
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void *vk_memory_allocation(void *user_data,
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size_t size,
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size_t alignment,
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VkSystemAllocationScope scope);
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void *vk_memory_reallocation(
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void *user_data, void *original, size_t size, size_t alignment, VkSystemAllocationScope scope);
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void vk_memory_free(void *user_data, void *memory);
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constexpr VkAllocationCallbacks vk_allocation_callbacks_init(const char *name)
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{
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VkAllocationCallbacks callbacks = {};
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callbacks.pUserData = const_cast<char *>(name);
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callbacks.pfnAllocation = vk_memory_allocation;
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callbacks.pfnReallocation = vk_memory_reallocation;
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callbacks.pfnFree = vk_memory_free;
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callbacks.pfnInternalAllocation = nullptr;
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callbacks.pfnInternalFree = nullptr;
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return callbacks;
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}
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# define VK_ALLOCATION_CALLBACKS \
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static constexpr const VkAllocationCallbacks vk_allocation_callbacks_ = \
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vk_allocation_callbacks_init(__func__); \
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static constexpr const VkAllocationCallbacks *vk_allocation_callbacks = \
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&vk_allocation_callbacks_;
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#else
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# define VK_ALLOCATION_CALLBACKS \
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static constexpr const VkAllocationCallbacks *vk_allocation_callbacks = nullptr;
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#endif
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} // namespace blender::gpu
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